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<html><head><title>Netlab Reference Manual netgrad</title></head><body><H1> netgrad</H1><h2>Purpose</h2>Evaluate network error gradient for generic optimizers<p><h2>Synopsis</h2><PRE>g = netgrad(w, net, x, t)</PRE><p><h2>Description</h2><p><CODE>g = netgrad(w, net, x, t)</CODE> takes a weight vector <CODE>w</CODE> and a networkdata structure <CODE>net</CODE>, together with the matrix <CODE>x</CODE> of inputvectors and the matrix <CODE>t</CODE> of target vectors, and returns thegradient of the error function evaluated at <CODE>w</CODE>.<p><h2>See Also</h2><CODE><a href="mlp.htm">mlp</a></CODE>, <CODE><a href="neterr.htm">neterr</a></CODE>, <CODE><a href="netopt.htm">netopt</a></CODE><hr><b>Pages:</b><a href="index.htm">Index</a><hr><p>Copyright (c) Ian T Nabney (1996-9)</body></html>⌨️ 快捷键说明
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